---
title: "CVE-2026-104611: Tenda AC9 - Buffer Overflow"
description: "Tenda AC9 15.03.02.13 contains a stack-based buffer overflow caused by manipulation of the \"netWanType\" argument in /goform/fast_setting_internet_set POST request handler, letting remote attackers cause denial of service or execute code, exploit requires crafted request."
url: https://panop.io/threat-heartbeat/CVE-2026-104611/
---

# CVE-2026-104611 Tenda AC9 - Buffer Overflow

Tenda AC9 15.03.02.13 contains a stack-based buffer overflow caused by manipulation of the "netWanType" argument in /goform/fast\_setting\_internet\_set POST request handler, letting remote attackers cause denial of service or execute code, exploit requires crafted request.

CVSS base score 9.1 /10

Critical

CISA KEV

Not listed

Public exploit

None known

Authentication

Required

EPSS

0.49% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-104611)

## Details

Type

Buffer Overflow

Impact

Remote Code Execution, Denial Of Service

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

Published

2 October 2026

Updated

15 October 2026

Weakness

[CWE-119](https://cwe.mitre.org/data/definitions/119.html)

## Vendor fix

Update to the latest version.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-104611](https://nvd.nist.gov/vuln/detail/CVE-2026-104611)
- [https://github.com/ZaneBoden/CVEs/blob/main/Tenda-AC9-fast\_setting\_internet\_set.md](https://github.com/ZaneBoden/CVEs/blob/main/Tenda-AC9-fast_setting_internet_set.md)
- [https://vuldb.com/cve/CVE-2026-104611](https://vuldb.com/cve/CVE-2026-104611)
- [https://vuldb.com/submit/962720](https://vuldb.com/submit/962720)
- [https://vuldb.com/vuln/412918](https://vuldb.com/vuln/412918)
- [https://vuldb.com/vuln/412918/cti](https://vuldb.com/vuln/412918/cti)
- [https://www.tenda.com.cn/](https://www.tenda.com.cn/)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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